[SR-Users] Relaying failure codes back to initial server

[Daniel-Constantin Mierla]

Maybe there is a parallel forking and one branch gets timed out (in this
case 408 is selected against 486). How many INVITE requests do you see
being sent out? Or you can eventually make the sip trace available for
viewing on this mailing list or some web site/pastebin out there.

Cheers,
Daniel

On 15/12/15 12:54, Alexandru Covalschi wrote:
> I use sngrep to track view the flow and I'm pretty sure it's accurate
> enough to tell me that.
> Here's relay route:
> route[RELAY] {
>
>         # enable additional event routes for forwarded requests
>         # - serial forking, RTP relaying handling, a.s.o.
>         if (is_method("INVITE|BYE|SUBSCRIBE|UPDATE")) {
>                 if(!t_is_set("branch_route"))
> t_on_branch("MANAGE_BRANCH");
>         }
>         if (is_method("INVITE|SUBSCRIBE|UPDATE")) {
>                 if(!t_is_set("onreply_route")) t_on_reply("MANAGE_REPLY");
>         }
>         if (is_method("INVITE")) {
>                 if(!t_is_set("failure_route"))
> t_on_failure("MANAGE_FAILURE");
>         }
>         if (!t_relay()) {
>                 sl_reply_error();
>         }
>         exit;
> }
>
> and here's reply routes
>
> # Manage outgoing branches
> branch_route[MANAGE_BRANCH] {
>         xdbg("new branch [$T_branch_idx] to $ru\n");
>         route(NATMANAGE);
> }
>
> # Manage incoming replies
> onreply_route[MANAGE_REPLY] {
>         xdbg("incoming reply\n");
>         if(status=~"[12][0-9][0-9]")
>                 route(NATMANAGE);
> }
>
> # Manage failure routing cases
> failure_route[MANAGE_FAILURE] {
>
> if (t_check_status("486")) {
>     exit;
> }
>         route(NATMANAGE);
>
>         if (t_is_canceled()) {
>                 exit;
>         }
>
> }
>
>
> However when endpoint replies with 486 BUSY I can't see that on FS,
> Kamailio just sends 408 REQ TERM after some amount of time
>
> 2015-12-15 13:34 GMT+02:00 Alex Balashov <abalashov at evaristesys.com
> <mailto:abalashov at evaristesys.com>>:
>
>     From what you describe, the reply should be going back to the
>     sender. Are you absolutely sure that it's not? If so, are there
>     any other actions you could be taking somewhere to drop it, such
>     as in an onreply_route?
>
>     ACKs to negative final replies are hop-by-hop, so the ACK you're
>     seeing directly from the proxy to the UAS is normal. 
>
>     --
>     Alex Balashov | Principal | Evariste Systems LLC
>     303 Perimeter Center North, Suite 300
>     Atlanta, GA 30346
>     United States
>
>     Tel: +1-800-250-5920
>     <tel:%2B1-800-250-5920> (toll-free) / +1-678-954-0671
>     <tel:%2B1-678-954-0671> (direct)
>     Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
>
>     Sent from my BlackBerry.
>     *From: *Alexandru Covalschi
>     *Sent: *Tuesday, December 15, 2015 05:03
>     *To: *Kamailio (SER) - Users Mailing List
>     *Reply To: *Kamailio (SER) - Users Mailing List
>     *Subject: *[SR-Users] Relaying failure codes back to initial server
>
>
>     Hello everyone!
>     I need to relay 486/408/... other failure codes back to initial
>     INVITE server. Here
>     http://lists.sip-router.org/pipermail/sr-users/2010-November/066382.html
>     is recommended just to exit failure_route, but that didn't work
>     for me. I need that to let Freeswitch know which cause has ended
>     the call. Now Kamailio just sends ACK to endpoint on receiving 486
>     BUSY. Would you kindly tell me how to achieve that?
>     Thanks in advance
>     -- 
>     Alexandru Covalschi
>     ABRISS-Solutions
>     VoIP engineer and system administrator
>     phone: +37367398493 <tel:%2B37367398493>
>     web: http://abs-telecom.com/
>
>
>     _______________________________________________
>     SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing
>     list
>     sr-users at lists.sip-router.org <mailto:sr-users at lists.sip-router.org>
>     http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>
>
>
>
> -- 
> Alexandru Covalschi
> ABRISS-Solutions
> VoIP engineer and system administrator
> phone: +37367398493
> web: http://abs-telecom.com/
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
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-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com
http://miconda.eu

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